Which of the following is not true?
a. ATP is formed during both photosynthesis and cellular respiration
b. Both prokaryotic cells and eukaryotic cells carry out cellular respiration
c. Water is released during photosynthesis and used during cellular respiration
d. CO2 is used during cellular respiration and released during photosynthesis
To determine which statement is not true, let's evaluate each option:
a. ATP is formed during both photosynthesis and cellular respiration: This statement is true. ATP (adenosine triphosphate) is a molecule that provides energy for cellular processes. It is produced both during photosynthesis (in the light-dependent reactions) and cellular respiration (in the electron transport chain).
b. Both prokaryotic cells and eukaryotic cells carry out cellular respiration: This statement is also true. Cellular respiration is a process that occurs in all living cells, including both prokaryotic cells (such as bacteria) and eukaryotic cells (such as plant and animal cells).
c. Water is released during photosynthesis and used during cellular respiration: This statement is true. During photosynthesis, water is split in a process known as photolysis, and oxygen is released, while hydrogen ions and electrons are used in the light-dependent reactions. In cellular respiration, water is produced as a byproduct when oxygen combines with hydrogen ions and electrons during the electron transport chain.
d. CO2 is used during cellular respiration and released during photosynthesis: This statement is not true. Carbon dioxide (CO2) is used during photosynthesis for the production of glucose. On the other hand, during cellular respiration, glucose is broken down and oxidized to release energy, and one of the byproducts is CO2, which is released.
Therefore, the statement that is not true is option d. CO2 is used during cellular respiration and released during photosynthesis.
The statement that is not true is:
c. Water is released during photosynthesis and used during cellular respiration